如何从一个私有注册表中提取Docker映像并将其推送到Jenkins管道中的另一个不同的私有注册表中

时间:2019-02-12 20:20:50

标签: docker jenkins jenkins-pipeline

我能够从Jenkins连接到两个私人注册表,并且可以提取所需的图像,但是我不知道如何将同一图像推送到其他存储库。

请注意,据我所知,声明式语法不支持推/拉或自定义注册表,因此我使用的是脚本式管道语法。我也不熟悉Groovy语法。

这是到目前为止我的Jenkinsfile的内容:

node {
    checkout scm

    docker.withRegistry('https://private-registry-1', 'credentials-1') {
        def image = docker.image('my-image:tag')
        image.pull()

        docker.withRegistry('https://private-registry-2', 'credentials-2') {
            image.push()
        }
    }
}

我将第二个“ withRegistry()”方法放在第一个方法中,以便可以使用已定义的“ image”变量。

我成功连接到第一个注册表并提取了最新映像。从Jenkins控制台输出:

Login Succeeded
[Pipeline] {
[Pipeline] sh
+ docker pull private-registry-1/my-image:tag
tag: Pulling from my-image
Digest: sha256:XXXXX
Status: Image is up to date for private-registry-1/my-image:tag

但是,这是连接到第二个注册表后的相关错误代码段:

...
Login Succeeded
[Pipeline] {
[Pipeline] sh
+ docker tag my-image:tag private-registry-2/my-image:tag
Error response from daemon: No such image: my-image:tag
...
  

我正在本地Windows计算机上使用Jenkins容器。它通过我的Ubuntu终端(Linux的Windows子系统)连接到Windows的Docker。

3 个答案:

答案 0 :(得分:1)

解决方案是在推送图像之前对其进行标记,最终代码:

node {
    checkout scm

    stage 'Pull latest image from private-registry-1'

    def image
    docker.withRegistry('https://private-registry-1', 'credentials-1') {
        image = docker.image('my-image:tag')
        image.pull()
    }

    stage 'Push image to private-registry-2'

    // SOLUTION START
    sh 'docker tag private-registry-1/my-image:tag private-registry-2/my-image:tag'
    image = docker.image('private-registry-2/my-image:tag')
    // SOLUTION END

    docker.withRegistry('https://private-registry-2', 'credentials-2') {
        image.push()
    }
}

我不喜欢如何通过“ sh”手动完成标记,但是我找不到通过内置Docker语法实现标记的方法。我还需要参数化图像名称和标签(my-image:tag),以备将来使用。

答案 1 :(得分:0)

感谢VictoryShoe的回答!

一件事情很重要,我花了很长时间才发现错误:

  • “ docker.withRegistry(' https: // private-registry-x','credentials-x')”->不要忘记在网址中添加“ https://” RegistryURL的前面
  • 在命令行“ sh'docker tag private-registry-1 / my-image:tag private-registry-2 / my-image:tag'”中,请不要添加任何“ https ://“放在注册网址的前面

以下jenkinsfile对我有用:

PS:在我的用例中,我从DockerHub提取源图像,标记该图像,然后将该目标图像推送到私有公司图像注册表。

def registryCredentials1 = "cridentialIdOfJenkinsForRegistry1"
def registryCredentials2 = "cridentialIdOfJenkinsForRegistry2"
def protocol = "https://"
def registryURL1 = "registry.hub.docker.com"
def registryURL2= "harbor.mycompany.xx.yy.com"

pipeline {
    agent any

    parameters {
         string(name: 'sourceImageName', defaultValue: '', description: 'Source-Image-Name, name-schema is like user/foo, e.g. jenkins/jenkins')
         string(name: 'sourceImageTag', defaultValue: '', description: 'Source-Image-Tag, e.g. lts')
         string(name: 'targetImageName', defaultValue: '', description: 'Target-Image-Name, name-schema is like user/foo, e.g. jenkins/jenkins')
         string(name: 'targetImageTag', defaultValue: '', description: 'Target-Image-Tag, e.g. lts')
    }

    stages {

        stage('Pull source-image from Registry 1 & tag the image') {
            steps {
                script {
                    //pull source-image from registry 1
                    docker.withRegistry(protocol + registryURL1, registryCredentials1) {
                        docker.image("${params.sourceImageName}:${params.sourceImageTag}").pull()
                    }

                    //tag the image
                    sh "docker tag ${registryURL1}/${params.sourceImageName}:${params.sourceImageTag} ${registryURL2}/${params.targetImageName}:${params.targetImageTag}"
                }
            }
        }

        stage('push target-image to Registry 2') {
            steps {
                script {
                    //push target-image to registry 2
                    docker.withRegistry(protocol + registryURL2, registryCredentials2) {
                        sh "docker push ${registryURL2}/${params.targetImageName}:${params.targetImageTag}"
                    }
                }
            }
        }
    }
}

答案 2 :(得分:0)

对于声明性语法,以下对我有用:

pipeline {
    agent {
        docker {
            label 'service'
            alwaysPull false
            registryUrl "${my-private-docker-registry_url_with_https}"
            registryCredentialsId "${jenkins_credential_id_for_login}"
            image 'lambci/lambda:build-python3.7'
            args '-v /var/run/docker.sock:/var/run/docker.sock --network host'
        }
    }